*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

li{
  list-style-type: none;
}

#header{
  overflow: hidden;
  height: 60px;
}

.header-left{
  float: left;
}
.logo-wrapper{
  width: 40px;
  height: 40px;
  float: left;
  margin-top: 10px;
}
.logo-wrapper > img{
  width: 100%;
}
.logo-text{
  float: right;
  line-height: 60px;
}
.header-right{
  float: right;
}
.header-nav{
  overflow: hidden;
}
.header-nav li{
  float: left;
  width: 100px;
  height: 60px;
  line-height: 60px;
}
.login-item{
  float: left;
}

.first-part{
  width: 1280px;
  height: 690px;
  background: url("images/first-part.jpg") no-repeat;
  position: relative;
}
.f-container{
  position: absolute;
  top: 200px;
  left: 200px;
}
.start-btn{
  width: 290px;
  height: 70px;
  line-height: 50px;
  text-align: center;
  background-color: #e74f4d;
  font-size: 32px;
  color: #fff;
  padding: 10px 0;
}
.second-part{
  width: 1280px;
  overflow: hidden;
}
.s-item{
  width: 25%;
  float: left;
}
.s-item-icon{
  width: 40px;
  height: 40px;
  margin: 40px auto;
}
.s-item-icon >img{
  width: 100%;
  height: 100%;
}
.s-item-text{
  text-align: center;
  padding: 0 20%;
  border-right:1px solid #ccc; 
}
.s-item-text:(last-child){
  border-right: 0;
}
.t-container1{
  width: 100%;
  text-align: center;
}
.f-list{
  overflow: hidden;
}
.f-list > li{
  float: left;
}